if (file_exists($path_to_site . $also_suggest_filename)) {
/*
//product "we also suggest" area files to be uploaded to "/Merchant2/product_include_files/also_suggest/" and named the SKU.html example: VR-2CHPLANE.html
//each product needs it's own file or the fallback file will be used.
//do NOT include <html>, <head>, <meta>, <title>, <body>, <style> etc. tags in the html document. JUST THE HTML INFO TO BE DISPLAYED
*/
include($path_to_site . $also_suggest_filename . $my_vars_to_pass);
}
else if (file_exists($path_to_site . $fallback_also_suggest_filename)) {
/*
//fallback file to default to until individual files are created
*/
include($path_to_site . $fallback_also_suggest_filename . $my_vars_to_pass);
}
else {
// there is a problem because we haven't made our fallback file either!
?>
<p>We have not populated our system for also suggested products yet. Please stay tuned.</p>
<?php
}

?>

but I get this error.

Warning: include(/var/www/localhost/htdocs/Merchant2/product_include_files/also_suggest/_fallback_we_also_suggest.php?Current_Product_Code=VR-2CHPLANE&Category_Code=RC_AIRPLANES_VORTEX) [function.include]: failed to open stream: No such file or directory in /var/www/localhost/htdocs/Merchant2/product_include_files/also_suggest/_default_display.php on line 24

if (file_exists($path_to_site . $also_suggest_filename)) {
/*
//product "we also suggest" area files to be uploaded to "/Merchant2/product_include_files/also_suggest/" and named the SKU.html example: VR-2CHPLANE.html
//each product needs it's own file or the fallback file will be used.
//do NOT include <html>, <head>, <meta>, <title>, <body>, <style> etc. tags in the html document. JUST THE HTML INFO TO BE DISPLAYED
*/
include($path_to_site . $also_suggest_filename);
}
else if (file_exists($path_to_site . $fallback_also_suggest_filename)) {
/*
//fallback file to default to until individual files are created
*/
include($path_to_site . $fallback_also_suggest_filename);
}
else {
// there is a problem because we haven't made our fallback file either!
?>
<p>We have not populated our system for also suggested products yet. Please stay tuned.</p>
<?php
}